diff options
| author | Alexey Dobriyan <adobriyan@gmail.com> | 2009-06-17 16:27:53 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-18 13:03:55 -0700 |
| commit | dca4a979604da1bac6956c0117abc2114d6dd3ec (patch) | |
| tree | 88d37178c05c0441900e81df9fbb217b0ac778d6 /kernel/pid_namespace.c | |
| parent | ed469a63c37a996fa2c7041d2dc980715707902c (diff) | |
| download | lwn-dca4a979604da1bac6956c0117abc2114d6dd3ec.tar.gz lwn-dca4a979604da1bac6956c0117abc2114d6dd3ec.zip | |
pidns: rewrite copy_pid_ns()
copy_pid_ns() is a perfect example of a case where unwinding leads to more
code and makes it less clear. Watch the diffstat.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Pavel Emelyanov <xemul@openvz.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Reviewed-by: Serge Hallyn <serue@us.ibm.com>
Acked-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Reviewed-by: WANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/pid_namespace.c')
| -rw-r--r-- | kernel/pid_namespace.c | 18 |
1 files changed, 3 insertions, 15 deletions
diff --git a/kernel/pid_namespace.c b/kernel/pid_namespace.c index 495d5dea22b2..821722ae58a7 100644 --- a/kernel/pid_namespace.c +++ b/kernel/pid_namespace.c @@ -116,23 +116,11 @@ static void destroy_pid_namespace(struct pid_namespace *ns) struct pid_namespace *copy_pid_ns(unsigned long flags, struct pid_namespace *old_ns) { - struct pid_namespace *new_ns; - - BUG_ON(!old_ns); - new_ns = get_pid_ns(old_ns); if (!(flags & CLONE_NEWPID)) - goto out; - - new_ns = ERR_PTR(-EINVAL); + return get_pid_ns(old_ns); if (flags & CLONE_THREAD) - goto out_put; - - new_ns = create_pid_namespace(old_ns); - -out_put: - put_pid_ns(old_ns); -out: - return new_ns; + return ERR_PTR(-EINVAL); + return create_pid_namespace(old_ns); } void free_pid_ns(struct kref *kref) |